The problem is that I'll most likely be driving on traffic-filled roads.
I'm also not as eloquent as others on this board.

Try to get on a few back roads even in the City so that you can at least push it to 62 mph. Also, if you can find a private road with bends on it. You will find out that the 63 is by no means a slouch. Not quite an M3, but close anyway.